Valentin knife, London, England, 1850-1870
A Valentin knife was one of the few knives able to cut slices of organs and soft tissues for microscopic examination. The double-bladed knife worked best when the blades were wet – best of all when submerged in water. When not in use the nickel-plated steel blades were put in leather covers to protect them. Named after its inventor, Professor Gabriel Valentin (1810-1883), a German-Swiss physiologist, the knife was popular from its invention in 1838 until the 1890s.
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The study of the structure of tissues by means of special staining techniques combined with light and electron microscopy.
Glossary: Valentin knife
used to cut slices of organs for microscopic examination
The use of microscopes to study objects or samples. The three major types of microscopy are optical, electron and scanning probe microscopy.